Azithromycin Impurity P CAS CATO-C4X-100352
| CAS No. | CATO-C4X-100352 |
| Molecular Formula | C39H72N2O13 |
| Molecular Weight | 776.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Azithromycin Impurity P under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Azithromycin Impurity P (CAS CATO-C4X-100352) is a certified pharmaceutical impurity reference standard with the molecular formula C39H72N2O13 and a molecular weight of 776.99 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Azithromycin Impurity P is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 776.99 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C39H72N2O13 |
| Molecular Weight | 776.99 g/mol |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Azithromycin Standards
- Azithromycin Impurity 47 (CAS CATO-C4X-100347)
- Azithromycin Impurity 26 (CAS CATO-C4X-100326)
- Azithromycin Impurity 32 (CAS CATO-C4X-100332)
- Azithromycin Impurity 45 (CAS 2365312-75-8)
- Azithromycin impurity 58 (CAS CATO-C4X-100358)
- Azithromycin EP Impurity L (CAS 90503-06-3)
- Azithromycin EP Impurity D (CAS 612069-26-8)
- Azithromycin impurity 57 (CAS CATO-C4X-100357)
Recommended Standards
- Clarithromycin EP Impurity G (CAS 127182-44-9)
- 4,10-Bis[(1-oxido-2-pyridinyl)methyl]-1,7-bis[2-(acetylamino)ethylmethanesulfonothioate] Ditrifluoroacetate Salt (CAS 947326-26-3)
- Clarithromycin EP Impurity O (CAS 127252-80-6)
- (1S,4E,5'S,6S,6'S,7R,8S,10R,11R,12S,14R,15S,16R,18E,20E,22R,25S,27R,29R)-22-Ethyl-7,11,14,15-tetrahydroxy-6'-((R)-2-hydroxypropyl)-5',6,8,10,12,14,16,29-octamethyl-3',4',5',6'-tetrahydro-2,26-dioxaspiro[bicyclo[23.3.1]nonacosane-27,2'-pyran]-4,18,20-triene-3,9,13-trione (CAS 1404-59-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com